Crushing-machine.



116.839,103.- PATBNTED-'DEG.25,1906. M. G. BUNNBLL.

- GRUSHING MACHINE.

` APPLICATION FILED 00T,24, 1900.

4 sums-SHEET 1.

No. 839,103.- PATENTBD DBO. 25, 190e.

TM. G. BUNNBLL.

L5 with comparatively little wear to reduce the yzo of action,particularly when it is found de- 45 pitman above the eccentric device,and thus UNITED sTATns` PATENT onnron.

MORTON BUNNLL, OF CHICAGO, ILLINOIS, ASSIGNOR TO WESTERN WHEELEDSCRAPER- CO., OEAURORA, ILLINOIS.

QRUSHlNG-.NIACHINE- N0. 839,103. Specification of Letters Patent.Patented Dec. 25, 1906. Continuation of application Serial No. 9,870,filed lviarch Z3, 1900. This application filed October'Zfl, 1900. SerialNo.'34.,105.

-To a/ZZ whom it may concern,.- ment, and organization of parts and newBe it known that I, MORTON Gr. BUNNELL, mode of operation results inpermitting praca citizen of the United States of America, tically anydegree of speed on the part of a and a resident of Chicago, county ofCook, jaw having a movement found to be highly 5 State of Illinois, haveinvented certain new 1 satisfactory and effective and in a conse- 6o anduseful Improvements in Crushing-Maquent improved and highly-efficientcrushing chines,ofwhichthe followingisaspeciiication. action; andanother feature of my invention My invention relates to that particularl| consists in providing a supporting-bearing class of crushing-machinesknown as jawfor the movable jaw, preferably of such charro ierushers.acter as to leave the jaw free to be raised and 6-5' Objects of myinvention are to provide a in then maintaining the jaw in place uponsimple, compact, and an easy-running crusher such bearing during thecrushing action by capable of high speedl and rapid crushing positioningthe pivotal or hinge-like connecaction and capable of continuousoperation tion between the pitman and the toggle-arm at avpoint on alevel, or substantially so, with 7o the upper edge of the crushing-faceof the movable jaw, so as to permit the thrust or reaction in thecrushing-hopper to be eX- erted in a direction below or practicallybenumber of bearing-points, so as to reduce friction, and to avoid theuse of certain objectionable features heretofore considered desirableand necessary; to insure'certainty sirable to drive the machine at highspeed,

and to so distribute the weight and strain as -to reduce vibration anddanger of breakage,

and to provide certain details and features z5 of improvement `tendingto increase the general efficiency and to render a machine of thischaracter serviceable and comparatively reliable for all kinds of work.,j

` My invention relates to crushing-'machines 3o of that particular typein which a crushinghopper is formed in part by a movable jaw having apivotal or hinge-like connection,

through the medium of a rigid toggle-arm,

with a pitman fulcrumed at its upper end 3 5 upon a swinging yoke andactuated at its lower end by an eccentric device 5 and in a machine ofthe above general character an important feature of my inventionconsists of a movable crushing-jaw having a rigid 40 toggle-arm and of avertically-disposed pitman having its upper end tied to the swingingyoke and` its lowerend actuated by an eccentricv device, together withmeans for tying the movable jaw to the portion of the man and so thatthe jaw, although, as stated, being preferably free to be raised, iseffectually prevented from jumping up or leaving its bearing while themachine is in operation;

and a further feature of my invention con- 8o sists of a roller orequivalent member interposed between the bottom. of the movable jaw anda portion of the body-frame, the said roller or like device therebyconstituting both an antifriction supporting-bearing and 8 5 rollingfulcrum upon which the jaw moves back and forth and tilts or oscillateswhen actuated by the pitman; and still another feature of my inventionconsists of the rovision of means passing through the mi dle 9o orintermediate portion of the pitman and connected with the movable jawinsuch manner as to keep the pitman in pivotal engagement with the rearend of the toggle-arm, saidV arm'being rigidly connected with the 95back of the movable jaw, and said means being preferably adjustable forthe purpose of taking up wear and lost motion; and another feature of myinvention consists in the provision of means for taking up wear betweenroo the swinging yoke and the body-frame and between the swinging yokeand the upper end of the pitman, so as to prevent lost motion and permitthe machine to beun atany keeping the pitman in pivotal engagement withthe rear lend of said toggle-arm, whereby the said jaw swings oroscillates relatively to the pitman and is also actuated or moved j 50bodily `in both directions-that is to say, to desired speed, and inaddition the specific 105 ward and away from the other jaw of the meansfor tying the movable jaw and pitman hopper-by the middle orintermediate porl together and for tying the ends of the swingtion or bythe upper end portion of a pitman ing yoke to the body-frame and upperend of fulcrumed at its upper end and actuated at the pitman, consistingof U-bolts employed,

55 its lower end, which construction, arrange- 1 preferably, in themanner hereinafter eX- rio low the connection between the jaw and pit- 75 j groove c in the pitman.

plained, also constitute valuable -features of my invention.

In the accompanying drawings, Figure l is a plan of a aw-crusherembodying the principles of my invention. Fig. 2 is a longitudinalsection on line X X in Fig. l. Fig. 8 is a transverse section on line YY in Fig. l. Fig. 4 is a plan of the movable jaw and pitman, the latterbeing in horizontal section. Fig. 5 is a plan of the rear portion of theyoke, showing the adjacent portion of the pitman in section. Fig. 6 is aplan of the forward portion of the yoke, the adjacent portion of theframe being shown in section. Fig. 7 is a diagrammatic view illustratingdifferent positions of the parts and showing how the roll provides ashifting fulcrum for the jaw.

As thus illustrated, my invention comprises a frame or body A, adaptedto provide a stationary support for the various operative parts. Thestationary jaw B is rigid with the forward portion of the frame. 'lhemovable jaw B is arranged in opposition to said stationary jaw, andtogether the two jaws form a hopper for receiving the material to becrushed. A. vertically-disposed pitman C, fulcrumed at its upper end andactuated at its lower end by an eccentric D, is arranged in rear of saidmovable jaw. Ihe toggle-arm B2 is rigid with said movable jaw. rlhe rearend of said arm is formed with a cylindric portion B3, extendingtransversely across the machine and engaging a U-bolts E, extendinthrough the pitman, are employed for ho ding or binding the jaw andpitman together, it being observed, however, that the joint is of apivotal or toggle-joint nature. The jaw is preferably supported by anantifriction-bearing-as, for example, by arranging a roll F between itsbottom and the frame. The said roll being interposed between the flatsurface b on the jaw and the flat surface e on the frame serves as asort of shifting fulcrum and supports the jaw for a bodily forward andback vibratory movement practically without friction. As a means forproviding a fulcrum for the pitman I connect the upper end of the latterwith the frame by means of a swinging yoke G. The cylindric forwardportion g of this yoke is j ournaled in a bearing a rigid with theframe, and the cylindric rear portion g of said yoke is seated in agroove c on the pitman. The yoke and pitman are secured together byU-bolts H, and U-bolts g2 are provided for takin@ up wear, which is onlyvery slight. It will lbe observed that the jaws are each provided with aremovable die and that each die is backed by one or more shims,preferably wedge-shaped in form. The dies and shims can be retainedinplace by bolts I, having wedge-shaped heads i, the bevel beingpreferably en the under side, as shown. With this construction the diescan be readily removed, and by the removal or insertion of shims thedistance between the jaws vcan be varied according to the characterdesired for the product. The wedge-shaped shims permit the angle of theaws to be varied according to the character of the rock, ore, or othermaterial to be crushed.

In operation the pitman is reciproeated by the eccentric, and as it isfulcrumed upon the yoke it acts as a lever. The vibratory movement ofthe pitman operates to alternately thrust the jaw forward and draw itback and to in this way effect the desired crushing aetion in thehopper. It will be observed that the jaw, although supported by a rollwhich leaves it free to rise, is held down by the resistance offered bythe rock, the lines of resistance passing below the toggle-joint. Inthis way the jaw is self-controlled and capable of rapid vibrationwithout danger of jumping up or leaving its cally without friction. thatthe yoke provides a fulcruni at each stroke of the jaw, the sideportions of the yoke with the particular toggle arrangement shownsustaining a tensile strain when the jaw is advanced, and these sameside portions being subject to some endwise compressive strain when thejaw is retracted and the movement of the yoke and roll com bining togive the jaw a combined bodily forward-andback and vibratory movement.

It will be readily understood that the bearings for the eccentric shaftcan be of any known or approved form' and that the machine can be drivenby an engine or other suitable power. Even when driven at high speedthere is no lost motion and comparatively little vibration, the pivotalconnections all being of such character that slight wear can be readilytaken up and as to make it unnecessary to employ connections between themovable jaw and body-frame for retracting the jaw and holding the partstogether.

With further reference to the antifrictionbearing it will be observedthat the roll F is preferably confined between two depending lips on thebottom of the jaw. In this way the roll is prevented from beingdisplaced. Also and as a further advantage of my simplified and improvedconstruction the parts can be readily assembled, and each part can bereadily removed for the purpose of repair or substitution.

By referring to Fig. 7 it will be seen that the roll F shifts slightlyduring the vibration of theI jaw. It will also be seen and, aspreviously stated, that the general trend of the lines of resistance isbelow the axis about which the jaw swings, or, in other words, that nolines of resistance are liable to occur in such direction as to passabove such axis. In this way or by placing the toggle-joint high, sothat all or at least most of the resist- It will also be seen bearingand praetiback and forth withrelation to said bearing.

In this way, as'previously described, the jaw is arranged for avibratory movement practically without friction. Although supported insuch marmer thatI it can be instantlyT raised or removed from itsbearing, the jaw is nevertheless maintained in rm contact withitsbearing, as the actuating and other f movable parts coperate to holdit down in `to the upper'end of the pitman.

crushing the ro ckor ore,

place upon said bearing. It willalso be observed that the swinging yokeis lirmly tied at each end-that is to say, thatits forward end issecured or tied to the bed or body frame and that its rear end issecured or tied be seen that the jaw is firmly tied to said pitman bydevices which are 'adjustable for the purpose of taking up wear, andthereby-preventing lost motion. In this way the eccentric and pitmanactuate the jaw in both directions, the rear cross-bar of the yokeserving as a fulcrum for .the pitman at both the forward and backstrokes of the jaw. v Thus positively actuated in both directions by thepitman thejaw is made cap able of free and unhindered movement b ack andforth up on a single supporting-bearing. Furthermore, and as previouslyexplained, lthis arrangement vmakes it unnecessary to resort toindependent devices or means for retracting the jaw. For this reason theeccentric in thus actuating the jaw in both directions will not besubject t'o uneven wear and will not become flattened. The portion of.the pitman above thdeccentric does all of the work. The roll upon whichthe jaw is supported acts as a rolling fulcrum-for the purpose Vofsupporting the jawin its combined -vibratory and bodily forward and backmovements. I n other words, the movable jaw and its rigid toggle-armserves as a lever for the pitman applying the power tosuch lever at itsrear end an the roll serving as a rolling fulcrum upon which this leveris supported. Thus it will be seen that the roll or rolling fulcrum isnot only ofl a character to provide a frictionless bearing for the jawin its forward and back movements, but also provides a fulcrum uponwhich the jaw may tilt or rock while it travels back and forth. In thisway the roll serves as a rolling fulcrum and antifrictionbearing, and`it .is for this reason that it is thej aw B', although It will also.

' and actuating termed va rolling fulcrum. vThe movable jaw and itsrigid arm constitute a lever-like .crushing member. .A

Withfurther respect to the .desirability and advantage of combining high-speed -with l an effective and satisfactory movement or motion Yon thepart of the jaw without .dan- :ger `of breakage and with a gooddistribution of the strain and of insuring an .effective balance and.distribution of the weight of the different parts at any and all timesand with any desired speed it will be observed that the pitman is notonly subject to the strains incident to employing its middle orintermediate portion or its upper end portion for actuating or bodilymoving the movable crushing-j aw in both directions or in all of thedi'- rections of its motion, the jaw being connected to swing oroscillate relatively to the pitman, but is also by reason of its beingfulcrumed at its upper end and actuated at its 'lower end subject to theweight y.or compressive strain imposed upon it by the swinging yoke,lthe movable crushing' aw thereby having a pivotalconnection with andbeing actuated bodily in opposite directions or in all necessary pitmanbetween its upper and its lower or actuated end, yor in any event bythat portion which is above the eccentric device, thus imposing theentire work of manipulatingl or opera-ting lthe toggle-joint theVmov-able aw in all of the directions of its motion upon some portion or.portions of a pitman which is actuated. at a point below ysuchportionor portions and which is fulcrumed at a point .above the eccentricdev-ice by which it is actuated at its lower end, and as far as thebroad feature of employing that portion of the pitman which is above theeccentric device for both manipulating the toggle-joint or pivotal orhinge-like connection between ythe pitman and movable jaw and actuatingsaid movable jaw in all of the directions of its motionit being obviousthat the said pivotal or hinge-like connection or engagement between thepitmanand movable jaw is ,of a togglelike character, inasmuch as itconstitutes a joint or point of articulation intermediate of the face ofthe jaw and the fulcrum-point vof the pitman-it is obvious that variousdevices may be employed for connecting or tying the movable jaw to someportion of the pitman above the eccentric device, so.y as to.

directions by that portion of the or fulcrumed end j IOO IIO

cipal objects of In invention to said movable jaw, the upper end orfulerum of the pitman than -upon the rock or other -powerful leverage`for actuating the jaw by -Ineans of .a

Vtuate i at its lower end trie device.

Ithis character can be :the weight that the stantially on a level ingone end tied to AvAiLAeL-E copy without iny anyway departing from thespirit of my invention.

he arrangement ofthe engagement or connection between the pitman and theend B3 of the arrn of the movable jaw at a point on a level orsubstantially on a level with the top of the crushing-face of andconsiderably nearer point of pivotal its lower or actuated endregardless of the character of the means for supporting the movable jaw,constitutes an important feature of the invention, as it combines theadvantages of preventing any tendency on the part of the movable jaw torise while-acting material and of a pitman C, which is fulcrumed at erend upon a swinging yoke and acby a suitable eccenits-up It `is obviousthat a crushing-machine of whiehthe motive power work. It isdesireonsequently, to'insure a high degree of of the power as possiblein the real work of .exerting a crushing action on the rock. In

other words, I aim to reduce the i-nternal resistanee, so to speak, ofthe crushing-machineas' much as possible. Therefore I have, asexplained, made it one of the prinso connect erent parts and distributeresult will be a perfectly armonious organization and operation and aconsequent increase in efficiency. What I claim as my invention is- 1. Aj aw-crusher eomprisinga bed or body,

and balance the di a hopper for-med in part by a movable jaw, a

supporting-roll inter osed between the bed or frame and the bo y of thesaid jaw, a pitman for actuating said jaw. and connected with thelatterat a point practically or suband thereby above or substantially abovethe lines of resistance, and a swinging yoke havthe pitman and the otherend tied to said bed or frame, said yoke thereby adaptedto sustain bothtensile and endwise compressive strainsduring the operation of theerusher, and the roll, yoke and pitman combining to :give the jaw acombined oseillatory and bodily forward-and-baek movement, the saidlroll constituting an antifriction supporting bearing upon and aboutwhich the movable jaw is tilted or oseillated by the said pitman.

2. A crushing-machine comprising a movable jaw, avertically-reciprocating pitman adapted and `arranged for actuating saidj aw in both directions, said jaw having a rigid driven by any suitableImotive power. In such ease the crushin -y -machine constitutes4 theconnection or medium through and by :is converted into useful xable,efficieney-that is to say, to utilize as much said movable with the topof the jaw,I

arm swingingly connected at its end to sai( pitman, a swinging yokehaving one end tie( to said pitman and the other end tied to thi crusherframe or body, so as to provide thi pitman with a fulcrum at bothforward an( back strokes of the jaw, adjustable bearing: for taking upwear between the pitman anc the jaw and yoke, so as to prevent lost movtion, and means for actuating said pitman the side portions ofthe yokethereby adapted to sustain both tensile and endwise compressive strainsduring the operation of the crushing-machine, and the means formaintaining the connection between the pitman and the said arm beingapplied to the pitman at a oint above the said means for actuating theatter, the point of engagement between the said arm and pitmanconstituting an axis about which the movable jaw and the pitman have arelative swinging motion.

3. A crushing-machine comprising a suitable bed or body structure, astationary jaw, a movable jaw, arranged opposite said stationary jaw, arolling fulcrun'i upon which jaw rests, a vertically-reciproeatingpitman actuated at its lower end by an eccentric, a toggle-arm rigidwith said movable jaw and journaled in the pitman at a pointsubstantially on a level with the uppe'r edge of the face of said jaw,and a swinging yoke connecting the upper end of the pitman end of saidbed or body structure.

4. A crushing-machine comprising a suitable bed or body structure, astationary jaw, a movable jaw arranged opposite said stationary jaw, avertically-reci V)rocating pitman actuated at its lower en by aneccentric device, a single bearing for said movable jaw consisting of arolling fulcrum interposed between the bottom of the jaw and a portionof said bed or body structure, a toggle-arm rigid with said movable jawand engaging the pitlnan at a point substantially on a level with theupper edge of the face of said jaw, clips extending through the pitmanand binding the toggle-arm and pitman together, a swinging yokeconnecting the upper end of thepitman with the forward portion of saidbed or body structure, and clips extending through the pitman andbinding said yoke and pitman together.

5. A crushing-machine comprising a suitable bed or body structure, astationary jaw, a movable jaw arranged o1 osite said stationary aw, asingle bearing iiir said movable jaw consisting of a roll interposedbetween the bottom of the jaw and a portion of said bed or bodystructure, a vertically-reeiproeating pitman actuated by an eccentricdevice, a swinging yoke having one end tied to the upper end of saidpitman and the other end tied to the forward portion of said fran'ie orbodystrueture, and a toggle-arm rigid with said movable jaw andconnected with tuting a lever-like crushing member,

` with `tionary jaw, a single means for tying vman together, said meanshaving a pivotal 10. A crushing-machine comprising a stationary 'aw anda v mov-able jaw, a togglearm rigid with said movable jaw,cally-reciprocating pitman actuated by an eccentric device, said pitmanhaving between its upper and lower ends a point of connection with therear end of said toggle-arm, means Jfor tying the movable jaw and pitmantogether and pitman and the toggle-arm, said means having a pivotalconnection with the toggle-arm and extending through and engaging thefback of the pitman above the said eccentric device, a swinging yokehaving one end tied to said pitman and the other end tied to thestationary jaw, and suitable devices for taking up wear at each end ofsaid yoke.

1 1. A crushing-machine comprising a bodyframe, a vertically-disposedpitman, a stationary crushing-jaw, a movable jaw supported for bodilymovement toward and away from the stationary jaw and provided with arigid arm pivotally engaging said pitman, an eccentric device foractuating the lower end of said pitman, a swinging yoke having one endtiedV to the body-frame and the other end tied to the upper portion ofsaid pitman, and means extending through the pitman above the eccentricdevice to bind the movable jaw and pitmantogether, whereby the movablejaw swings about its point of pivotal connection with the pitman thepitman at a point .substantially on a level with the upper edge of theface of the jaw.

A crushing-machine comprising a suitable bed or body structure, astationary jaw, a movable jawarranged opposite said stabearing for saidmovable jaw consisting of a rolling fulcrum interposed between thebottom oi' the jaw and a portion of said bed or body structure, avertically-reciprocating pitmanactuated at its lower end by aneccentric, and a toggle-arm rigid with said jaw and pivotally connectedwith said pitman at a point substantially on a level with the upper edgeof 'the 'face of said jaw7 whereby the .pitman and toggle-arm cooperateto prevent the movable jaw from rising from its bearing. p

7. A crushing-machine comprising a suitable bed or bodyy structure,astationary jaw,. a movable jaw arranged opposite said stationary jaw, aAsingle supporting-bearing for said movable jaw consisting of acylindricrolling fulcrum interposed between the bottom of the jaw andsaid bed or body structure, a vertically-reciprocating pitman actuatedat its lower end by an eccentric, and a togglearm rigid with saidmovable jaw and pivotally connected with the upper -portion of saidpitman.

8. A crushing-machine comprising a suitable bed or body structure, astationary jaw, a movable jaw arranged opposite said stationary jaw, asingle supporting bearing or ulcrum upon which said movable jaw rests,said jaw being left free to be raised, -a vertically-reciprocatingpitman,l an eccentric for actuating said pitman,l and a toggle-arm rigidwith said jaw, the jaw and arm constiand the toggle-arm being pivotallyconnected with the pitman ata point between the upper and lower ends oithe latter, and at a point vsubstantially on a level with the upper edgeof the face ofsaid jaw, whereby the pitman and toggle-arm cooperate tomaintain the jaw in place upon said Julcrum during the crushingoperation.

9. In a crushing-machine, the combination of a suitable body-frame, ajaw rigid with said bod -rame, a movable jaw yopposed to said stationaryjaw and provided a rigid rearwardly-extending togglearm, avertically-reciprocating pitman actuated at its lower end by aneccentric device, said pitman being provided between its upper and lowerends with a bearingv adapted to engage the rear end of said toggle-arm,the movable `iaw andpitthe middle or intermediate portion of a pitmanlulcrumed at its upper end.

frame, a stationary crushing-jaw, a movable crushing-j aw supported forbodily movement toward and away from the stationary jaw and providedwith a rigid arm, a pitman fulcrumed at its upper end and actuated atits lower end by an eccentric device, and means extending through andengaging the back of said pitman above the eccentric device to keep theend of said arm in pivotal engagement with the face of the pitman,whereby the movable jaw swings relatively to said pitman and is actuatedin all of the directions of its motion yby the portion of the pitmanhaving pivotal connection with the end of said arm.

13. A crushing-machine comprising a bodyframe, a stationary jaw, amovable crushingjaw provided with a rigid arm, a pitman actuated at itslower end, means extending through and engaging the back of said pitmanbetween its upper and lower ends, and at a point above the means foractuating the pitman, to keep thesaid end of said arm in pivotalengagement with the face of the pitman, a swinging yoke having one endtied tothe body-iframe, and U-bolts for tying the other end of the yoketo the upper end of the pitman, said bolts extendingthrough the upperportion oi the pitman.

connection with the toggle-arm and extending through and engaging theback of the pitman above the eccentric device, and a swinging yokehaving one end tied to the u er end of said pitman and the other end ctied to the body-trame.

a verm-- for taking up wear between the and is moved bodily in bothdirections by 1 2. A crushing-machinecomprising a bo dy- IOO rio

14. A crushing-machine comprising a bodyframe, a stationarycrushing-jaw, a movable crushing-jaw provided with a rigid arm, aswinging yoke, a pitman fulcrurned at its upper portion upon said yokeand actuated at its lower end, and U-bolts for keeping the end of saidarm in pivotal engagement with thc pitman, said bolts extendinghorizontally through the pitman above the point at which the latter isactuated, and said yoke having its opposite ends tied respectively tothe bodyframe and the upper end of the pitman, whereby the said movablecrushing-j aw is actuated in all ofthe directions of its motion by thatportion of the pitman which is tied by said U-bolts to the end of saidarm.

l5. Acrushing-machine comprising amovable crushing-jaw tied to andhaving' a direct pivotal connection with, and actuated bodily inopposite directions by, a pitman fulcrumed above and actuated at apointbelow, the jaw thus actuated being adapted to swing relatively to thepitman during the operation of the machine, said pivotal connection oraxis about which the jaw and pitman have a relative swinging motionbeing above the point at which the pitman is actuated.

16. A crushing-machine comprising a movable jaw having a direct pivotalengagement with, and actuated in all of the directions of its motion by,a pitman ulcrumed at or near its upper end and actuated at its lowerend., the jaw thus actuated being adapted to swing relatively to thepitman during the operation of the machine, said pivotal engagement oraxis about which the jaw and pitman have a relative swinging motionbeing above the point at which the pitman is actuated.

' 17. A crushing-machine comprising a suitable body-rame, a jaw rigidwith said bodyframe, a movable jaw opposed to said stationary jaw andprovided with a rigid rearwardly-extending toggle-arm, averticallyreciprocating pitman actuated at its lower end by an eccentricdevice, said pitman being provided between its upper and lower ends witha bearing adapted to engage the rear end of said toggle-arm, means fortying the movable jaw and pitman together, said means having a pivotalconnection with the movable crushing-j aw and extending through andengaging the back of the pitman above the eccentric device, and aswinging yoke having one end tied to the upper end of said pitman andthe other end tied to the body-frame.

18. A crushing-machine comprising a movable jaw provided with a rigidrearwardlyextending toggle-arm, a vertically-reciprocating pitman, asuitably-mounted swinging yoke having one end tied to the upper end ofsaid pitman, an eccentric actuating the lower end of said pitman, thesaid pitman being thereby subject to the endwise compressive strainimposed upon it by the weight ofsaid yoke, the upper portion of thepitman having a pivotal engagement or connection with the rear end ofsaid toggle-arm, and means for tying the movable jaw and )itmantogether, said means being removablT secured. to the portion of the pitman above the eccentric device, whereby the said movable jaw swingsrelatively to the pitman and is actuated in all ot the directions of itsmotion by that portion of the pitman above the said eccentric device.

19. A crushing-machine comprising a suitably-supported movable awprovided with. a rigid arm, a swinging yoke, a pitman having its upperend iulcrumed upon the swinging end portion of said yoke, an eccentricdevice actuating the lower end of said pitman., and means for tying thejaw and pitm an together, the end of said arm being held in pivotalengagement or connection with the pitm an at a point substantially on alevel with the top of the crushing-face of said jaw, whereby, in themain, the-crushing action docs not tend to lift the jaw, and whereby thesaid jaw swings relatively to the pitman and is actuated in all ofthedirections of its motion by that portion of the pitman above the saideccentric device.

20. A crushing-machine comprising a suitably-supported movable jawprovided with a rigid arm, a pitman actuated at its lower end by aneccentric device, and a swinging yoke upon which the upper end of thepitman is fulcrumed, the end of said arm having a pivotal engagement orconnection with the pitman at a point nearer the latters upper end thanits lower end, and at a point substantially on a level with the top ofthe crushingface of said. jaw, whereby the said jaw is su bstantiallyfree from any tendency to rise or swing upwardly about its axis or pointof pivotal connection with the pitman during the operation of themachine.

21. In a crushing-machine, the combination oi crushing means including apair of jaws, and operating means for producing relative movementbetween said jaws, said operating means including a pitman, an eccentricior actuating the lower end of said pitman, means including a swingingtogglearm for directly tying and connecting the upper portion of thepitman to one jaw, a swinging yoke for tying the up er portion of thepitman to the other jaw, tlrie said pitman being adapted to tiltrelatively to both of said jaws, and that portion of the pitman abovethe said eccentric constituting a power-transmitting connection throughwhich all power necessary for producing said relative movement, in allof its directions, is communicated from the eccentric to the crushingmeans.

Signed by me at Chicago, Illinois, this 19th day of October, 1900.

MORTON G. BUN NELL. Witnesses:

ARTHUR F, DURAND, WILLIAM HEARTT.

IOO

